CA2044171A1 - Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same - Google Patents
Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the sameInfo
- Publication number
- CA2044171A1 CA2044171A1 CA2044171A CA2044171A CA2044171A1 CA 2044171 A1 CA2044171 A1 CA 2044171A1 CA 2044171 A CA2044171 A CA 2044171A CA 2044171 A CA2044171 A CA 2044171A CA 2044171 A1 CA2044171 A1 CA 2044171A1
- Authority
- CA
- Canada
- Prior art keywords
- phase
- corrosion
- producing
- rare earth
- same
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
- C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
This invention provides permanent magnets being considerably excellent in not only magnetic properties but also corrosion resistance by using magnetically useful two phases, i.e. RE2TM14B phase having a high residual magnetic flux density and a low melting point RE-TM phase or RE-TM-B phase enhancing the sinterability and possessing a cleaning action against grain boundary of main phase and further forming an electrochemically noble composition as a starting material to prepare a two phase magnet.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP263,946/89 | 1989-10-12 | ||
JP26394689 | 1989-10-12 | ||
JP33502889 | 1989-12-26 | ||
JP335,028/89 | 1989-12-26 | ||
JP269,635/90 | 1990-10-09 | ||
JP2269635A JP2675430B2 (en) | 1989-10-12 | 1990-10-09 | Corrosion resistant rare earth-transition metal magnet and method of manufacturing the same |
PCT/JP1990/001315 WO1991006107A1 (en) | 1989-10-12 | 1990-10-11 | Corrosion-resistant, rare earth-transition metal magnet and method of production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2044171A1 true CA2044171A1 (en) | 1991-04-13 |
CA2044171C CA2044171C (en) | 2000-12-12 |
Family
ID=27335262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002044171A Expired - Fee Related CA2044171C (en) | 1989-10-12 | 1990-10-11 | Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0447567B1 (en) |
JP (1) | JP2675430B2 (en) |
KR (1) | KR960013029B1 (en) |
CA (1) | CA2044171C (en) |
DE (1) | DE69027201T2 (en) |
WO (1) | WO1991006107A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69202515T2 (en) * | 1991-06-04 | 1995-09-21 | Shinetsu Chemical Co | Process for the production of two-phase permanent magnets based on rare earths. |
US5405455A (en) * | 1991-06-04 | 1995-04-11 | Shin-Etsu Chemical Co. Ltd. | Rare earth-based permanent magnet |
JP2782024B2 (en) * | 1992-01-29 | 1998-07-30 | 住友特殊金属株式会社 | Method for producing raw material powder for R-Fe-B-based permanent magnet |
US5387291A (en) * | 1992-03-19 | 1995-02-07 | Sumitomo Special Metals Co., Ltd. | Process for producing alloy powder material for R-Fe-B permanent magnets and alloy powder for adjusting the composition therefor |
CN1044940C (en) * | 1992-08-13 | 1999-09-01 | Ybm麦格奈克斯公司 | Method of manufacturing a permanent magnet on the basis of ndfeb |
EP0583041B1 (en) * | 1992-08-13 | 1997-02-05 | Koninklijke Philips Electronics N.V. | Method of manufacturing a permanent magnet on the basis of NdFeB |
US5482575A (en) * | 1992-12-08 | 1996-01-09 | Ugimag Sa | Fe-Re-B type magnetic powder, sintered magnets and preparation method thereof |
EP1712652A4 (en) | 2004-06-22 | 2010-10-13 | Shinetsu Chemical Co | R-fe-b-based rare earth permanent magnet material |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2700643B2 (en) * | 1987-04-11 | 1998-01-21 | 株式会社トーキン | Manufacturing method of rare earth permanent magnet with excellent oxidation resistance |
DE3783413T2 (en) * | 1986-09-16 | 1993-05-27 | Tokin Corp | METHOD FOR PRODUCING A RARE-EARTH IRON BOR PERMANENT MAGNET WITH THE AID OF A QUARKED ALLOY POWDER. |
JPH0621324B2 (en) * | 1986-10-04 | 1994-03-23 | 信越化学工業株式会社 | Rare earth permanent magnet alloy composition |
JPS63127505A (en) * | 1986-11-17 | 1988-05-31 | Taiyo Yuden Co Ltd | Magnet and manufacture thereof |
JPH063763B2 (en) * | 1986-12-26 | 1994-01-12 | 信越化学工業株式会社 | Rare earth permanent magnet manufacturing method |
JP2948223B2 (en) * | 1987-03-31 | 1999-09-13 | 住友特殊金属 株式会社 | High performance permanent magnet with excellent corrosion resistance and method of manufacturing the same |
US5015307A (en) * | 1987-10-08 | 1991-05-14 | Kawasaki Steel Corporation | Corrosion resistant rare earth metal magnet |
-
1990
- 1990-10-09 JP JP2269635A patent/JP2675430B2/en not_active Expired - Lifetime
- 1990-10-11 DE DE69027201T patent/DE69027201T2/en not_active Expired - Fee Related
- 1990-10-11 EP EP90914967A patent/EP0447567B1/en not_active Expired - Lifetime
- 1990-10-11 WO PCT/JP1990/001315 patent/WO1991006107A1/en active IP Right Grant
- 1990-10-11 KR KR1019910700606A patent/KR960013029B1/en not_active Expired - Fee Related
- 1990-10-11 CA CA002044171A patent/CA2044171C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69027201T2 (en) | 1996-10-10 |
WO1991006107A1 (en) | 1991-05-02 |
JPH03250607A (en) | 1991-11-08 |
KR960013029B1 (en) | 1996-09-25 |
JP2675430B2 (en) | 1997-11-12 |
EP0447567B1 (en) | 1996-05-29 |
EP0447567A1 (en) | 1991-09-25 |
CA2044171C (en) | 2000-12-12 |
DE69027201D1 (en) | 1996-07-04 |
EP0447567A4 (en) | 1992-05-20 |
KR920701999A (en) | 1992-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR880002202A (en) | Permanent magnet with excellent thermal stability | |
CA2340362A1 (en) | Iron-rare earth-boron-refractory metal magnetic nanocomposites | |
CA2044171A1 (en) | Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same | |
US4544904A (en) | Composite magnet and magnetic circuit | |
EP0325403A3 (en) | Resin bonded magnets | |
DE69011328D1 (en) | MAGNETIC ALLOY COMPOSITIONS AND PERMANENT MAGNETS. | |
EP0571002A3 (en) | Permanent magnet alloy having improved resistance to oxidation and process for production thereof | |
EP1189245A3 (en) | Magnetic alloy powder for permanent magnet and method for producing the same | |
RU93050138A (en) | ALLOYS FOR PERMANENT MAGNETS BASED ON RARE-EARTH ELEMENTS, IRON AND BORON | |
JPS5567110A (en) | Intermetallic compound magnet | |
Neumann et al. | Line Start Motors Designed With Nd--Fe--B Permanent Magnets.(Retroactive Coverage) | |
Homma | Permanent Magnets and Intermetallic Compounds | |
US5055146A (en) | Permanent magnet alloy | |
JPS5415415A (en) | Method of producing intermetallic compound magnet | |
Ponomareva et al. | Temperature Coefficients of Induction and Magnetic Properties of Sm sub x(R, Gd) sub 1--x Co sub 5(R= Tb, Dy, Ho, Tm) Alloys | |
Wu et al. | Rare Earth--Cobalt Permanent Magnet of the Type Nd sub x Sm sub 0. 5--x Ce sub 0. 5(Co sub 0. 824 Cu sub 0. 118 Mn sub 0. 059) sub 6. 8.(Retroactive Coverage) | |
Ghandehari | Rare Earth--Iron--Boron Permanent Magnets Production | |
Kojima | New High-Quality Permanent Magnet for Rotor--Anisotropic Manganese--Aluminum Magnet | |
JPS57131338A (en) | Permanent magnet alloy with low irreversible demagnetizability | |
Martin et al. | Squareness Ratio for Various Rare Earth Permanent Magnets.(Retroactive Coverage) | |
Herget | Current Patent Situation in the Field of the New Permanent Magnet Material NdFeB.(Retroactive Coverage) | |
Cadieu | Optimization of film synthesized rare earth transition metal permanent magnet systems. Progress report, August 1, 1990-March 1991 | |
JPS556431A (en) | Permanent magnet alloy | |
JPS5644738A (en) | Permanent magnet alloy | |
Kononenko et al. | The Magnetic Properties of Permanent Magnets Made of RCo sub 5-Type Alloys Obtained by Sintering in the Presence of a Liquid Phase |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |